Hose reel



Sept. 30, 1952 F. SCHWEISTHAL HOSE REEL Filed sept. 27, 1950 5Sheets-Sheet l Sept 30, 1952 F. G. scHwElsTHAL 2,612,326

HosE REEL.

Filed Sept. 27, 1950 5 Sheets-SheecI 2 sept. 30, 1952 Filed Sept. 2'7,1950 F. G. scHwElsTHAL 2,612,326

HOSE REEL 5 Sheets-Sheet 3 lll SePt- 30, 1952 F. G. scHwElsTl-IAL2,612,326

HOSE REEL.

Filed Sept. 27, 1950 5 Sheets-Sheet 4 Sept 30, 1952 F. G. SCHWEISTHAL2,612,326

252 .EE/Ey@ 250 l 'f "ai 24B .2727/272 for' Patented Sept. 30, 1952UNITED STATES PATENT OFFICE HDSE REEL :Frederick e. sehweisthal, Skokie,nl., signor to Stewart-Warner Corporation, Chicago, Ill., a corporationof Virginia Application September 27, 1950, Serial No. 187,004

(o1. cremas) 11 Claims.

This invention relates to hose reels and particularly to reelspermitting manual unwinding of a hose and having power operated meanssuch as a mechanism operated by compressed air for rewinding the hose. f

An objectbf the invention is to provide a hose reel having an airpowered Winding mechanism and a control valve apparatus for regulatingthe resistance which the reel offers to unwinding of the hose.

A further object is to providela hose reel having an air poweredrewinding means and a valve mechanism to control the transmission ofcompressed air to the rewinding means.

A further object is to provide a hose reel having an air poweredrewinding means and a control valve mechanism to initiate thetransmission of air to the rewinding means in response to an outwardpull on the hose, followed by a slackening of tension on the hose.

A further object is to provide a hose reel having an air poweredrewinding mechanism and a control mechanism providing positive rewindingtorque on the reel even under adverse operating conditions. i

A further object is to provide a hose reel having a control mechanism toprevent unwinding of the hose due to gravity, should the air pressuredrop below a vpredetermined value which is insufcient to operate therewinding mechanism.

Further objects and advantages of this invention may be derived from thefollowing complete description of an illustrative embodiment of theinvention, taken together with the drawings, in which:

Fig. l is a side elevational view of the hose reel including the airpowered rewinding means and the control mechanism;

Fig. 2 is a fragmentary sectional view of the hose reel taken on thebroken line 2--2 of Fig. l and drawn to a larger scalethan Fig. 1;

Fig. 3 is a side sectional view taken on the line 3 3 of Fig. 2 anddrawn to the same scale as Fig. l;

Fig. 4 is a fragmentary side view, drawn to the same scale as Fig. 2,showing the control valve mechanism in a section taken on the line 4 4of Fig. 5;

Fig. 5 is a fragmentary sectionalview taken on the line 5-5 of Fig. 4; j

Fig. 6 is a fragmentary sectional view of the control valve mechanismtaken on the broken line 6 6 of Fig. 5; and l Fig. "I is afragmentaryview similar to Fig. e showing changes in the positions ofsome of th operating parts.

. 2 absorber IE, and a control vmechanism I8 for regulating reeling andunreeling.

The reel I0 may assume a variety of forms, such as that illustrated inFig. 2. The reel comprises a sheet metal disc 22 and a narrow sheetmetal drum 24. The disc 22 and a radially extending ange portionv 26 ofthe drum 24 are adapted to provide lateral support for a plurality ofhose coils (not shown) which may be wound upon the reel. The peripheraledges of the disc 22 and the drum 24 have outwardly turned reinforcingflanges 28.

The disc 22 and a disc-shaped end portion 3@ of the drum 24 are securedto a iiange 32 fixed to a shaft 34 which is journaled in a bearing 36forming a part of a casting 31 secured to the standard I2 by bolts 38and All. As shown, the standard I2 may be formed from a heavy steelplate material and may have an opening 42 for receiving an annular boss43 extending from the bearing 3E. As shown in Fig. 2, the bearing 36 ispositioned on the right-hand side of the standard I2 and the shaft 34`extends through the standard l2, and beyond the left-hand sideA of thebearing for supporting the reel I Ily on the left-hand side of thestandard I 2. This structure is rigid and compact.

A fluid, such as lubricant, may be supplied in some suitable manner to ahose wound on the reel, such-,as by means of an axial passageway Mextending part way through the shaft 34. The left-hand end of thepassageway 44 adjacent the reel iii is closed by a plug 46 and isconnected with a radially extending nipple conduit tting t8 which may beconnected with one end of a hose, not shown.

'Ihe right-hand portion of the shaft-34 has a reduced diameter to form astem 50 having a plurality of radial apertures 32 communicating with theaxial passageway 45. The axial passageway ifi extends from the left-handend of the shaft 34 rightwardly beyond the apertures 52, but does notextend to the right-hand end of the shaft.

A plurality of bushings 54, 56, 58 and k(ill are assembled from left toright between the stem Eil of the shaft and the bearing 36. -A packingring S2 is compressed between the bushings 54 and 5E and a similarpacking ring 64 is compressed between the bushings 58 and ED.

The bushings 56 and 58 are separated by a tubular spacer 66' having aplurality of generally radial apertures 6B. I

A chamber IIJ for the passage of-lubricant is provided opposite theshaft apertures 52 between the shaft and the bearing 36, and the tubularspacer 66 is positoined in the chamber.

As best shown in Fig. 3, a radial bore 12, exten-ding through thebearing 36, provides a means for supplying lubricant from a pressuregrooved to form a neck 14 (Fig. 2). A thrustplate 16 secured to thebearing 36 by the bolts.-

38 and 40 has a keyhole opening 18 (Fig. 1) for engaging the neck 14 ofthe shaft 34.

As best shown in Fig. 3, the air cylinder I4 comprises an outer wall orcylinder 80 and an inner wall or cylinder 82.' An. annular spacecrchamber 84 between the cylinders 80 and 82 provides an air passageway.The outery end of' the outer cylinder 80 isfclosed by a disc-shaped plug86 which has an inwardly facing peripheral groove 88 to. providecommunication between the interior of the inner cylinder B2i` and theannular passageway 8.4.

A piston 90 having an outwardlyy facing packing ring 92 retained by awasher 94' is sli'dably positioned within the innercylinder 82' of, the:air cylinder I4. The upper end of a toothed rack 06 is securedto theinner end of the pis'- ton 90. The rackf 9'6 and the air cylinder I4'are positioned' at an inclined angle.v

An operating connection between the piston 90 andthe reel |0 isyprovided by gearing. including a pinion 98 meshing with the rack 86, agear coaxially iixed to the. pinionY 98, 'and a pinion |02 eng-agingythe gear |00 and fixed tothe shaft-34 supporting the reel I0.

As best shownin Fig. 2, the pinion |02 ispositioned on thefreel shaft 34between the bearing 36? .and the reel |0 onthe left-hand side of the.standard I2. The gearv |00 and the pinion 98 yare fixed to ashaft' |041journal'ed in bear-` ings |064V and |08 which may be formed integrallywith the casting 31., Therack 96 passes between the shaft |041 and thereel shaft 50.

The shaft |04 has an enlargedI .diameter between the gear |00 vand thepinion 98 where the shaft |04 engages the bearing |06 and is providedwithA -a peripheral groove I-'Ilil to receive a thrust pin |I-2 securedto the bea-ring |06. The gear |00 is securedV to the left-hand end ofthe shaft |0`4 and is positioned t-omesh with the pinion |02.

The outercylinder 80 of the air cylinder I4 is threaded into a collarI|4 which may be formed integrally with the casting 31.

The hydraulic snubber or shock' absorber I6 comprises an outer cylinderor wall ||6 and' an inner' cylinder or wall I 8 which are dimensi'onedto) providefan annular yspaceA or chamber between the inner and outerwalls. The outer end of the outer wall |16 is threaded intov a collarA|22 which may be formed integrally with the casting 31. The shockabsorber |6'I is therebyd positioned coaXially with the air cylinder I4but extending in the opposite direction. A piston- |24 having anoutwardly facing packing ring; |26 retained by a shouldered washer |28is positioned within the inner cylinder I|8 of the shock absorber I6.The piston |24 is secured to the rack 06 at the end opposite the aircylinder pistonv 90.

The outer end of the outer cylinder' |I6 of the snubber I6 is closed byan outwardly vconvex'disc |30; A cap |32 is threaded to theV cuter en-dof the innerV cylinder ||8 of the snubber I6. A valve disc |34 ismovably positioned between the cap |32 and the -outer endl of the innercylinder IIB. The valve disc is engageable with the cap |32 to close apluralityl of aper- 4 tures |36 in the cap |32 and is movable inwardlyto provi-de communication through the aperin'riasA `I3'I 'and aplurality of apertures |38 in the ldisc |34.

An aperture |40 extends centrally through the cap |32 and through ashort stem |42 protruding outwardly from the cap |32. A radial aperture|44 extends from the central aperture |40 through the. stem |42. Theouter end of the aperture |1402 is closed by a screw |46 which alsoserves toconstrict the radial aperture |44. Aqcentralvaperture. |48 inthe disc |34 is aligned with the central aperture |40 in the cap |32.

A ring- |50 is positioned within the coll-ar |22 for sealing engagementwith the inner cylinder |18' of thel shock :absorber I6 and the innersurface. of' the' collar' |22. An opening |52, extending radiallyvthrough the collar |22 and closed byl az. threaded plug' |54, isprovided for introducing a small quantity of liquid, shown at |55, suchas, alcohol or oil. into the annular space betweenv the: outer` andinner walls. ||6 and IIS, and'. thence into the interior of the innercylinder ||.8',as'shown..

The inner end of the inner cylinder 82 of the air.l cylinder |;4 ispositioned in an annular groove |56, in the collar' |,I4 fory sealingthe annular space 84 between the innery and outer cylinders of the aircylinder I4.V Agasket |58 is positioned betweenthe inner endi of. theouter cylinder of' the air cylinder L4. and', the collar |I4.

The' mounting bolt 38 for the bearing 36 supports a roller |60 whicheng-ages a longitudinal surface |62 of' the; rack: 9.6 opposite thepinion 98 which meshes with'. the rack. The roller |60 provides lateralsupport for the rack 96 and maintains the.. rack accurately in mesh withthe pinon98;

A drilled conduit'. |10 communicates with the annular space 84 betweenthe outer and inner cylinders 60L andl 82. of the air-'cylinder I4 andextends horizontally in a radial plane from the collarl |'|4'. The endofthe conduit remote from the: collar;- ||.4" is closed by a threadedplug |12. A transverse passage'v |14, shown in Figs. 4, 5 and 7;communicates with the conduit |10 near the plug |12 andv opens into acylindrical chamber |16 (Fig:y 5.)- in a valve body |18.

An. inclined passage |80- (Figs. 4 and 5) connects the cylindricalchamber |16 with a lower cylindrical inlet valve chamber |82, which isclose'd at its` lower'- end by a threaded plug |84. An inlet valve stem|86 extends through the plug |64, the. chamber |82 and a clearance hole|88 inthe upper'end of` the chamber |82. The clearance hole |88. opensinto an upper cylindrical nletavalve chamber closed at its upper end bya nipple fitting |92. Aivalve disc |94, iixed to the upper end of thevalve stem |86, normally seats over the upper end of the clearance hole|88" connectingv the` lower valve chamber |82 with the: upper valvechamber |90. The disc |94 and the stem |86 are movable upwardly toprovide communication between the upper and lower valve chambers throughthe clearance hole |88 around the stem |86.

A packing ring |96' prevents the escape of air through the plug |84around the valve stem |86.

A helical' spring: |98 is,V compressed between the valve disc |94 andthe nipple tting |92 for biasing the disc normally to close theclearance hole |88.

A tubular collar 2'00- is threaded to the upper end of the nipplefitting |92. A check valve disc 202 is positioned within the collar 200for en..

gagement with an inwardly facing valve seat 204 `vfor closing `a`central passage 206 kextending y against the valve seat 204.

The outer end of the collar 280 is threaded to receive the'air inlettting 20, also shown in Fig. 1.

A diagonal passage 220'co'n'nects the cylindrical chamber |16 with acylindrical upper venting valve chamber 222 closed at its upper end by athreaded plug 224. An aperture 226 coaxial with the upper chamber 222connects the upper chamber with a lower Venting-valve chamber 228 closedat its lower end'by athreaded plug 230. A venting valve stem 232 extendsthrough the plug 230, a packing ring 234 positioned between the stem andthe plug, the lower cylindrical chamber 228, and the aperture 226. Aventing Valve disc 236, xed to the upper end of the stem 232, is movableinto sealing engagement with a valve seat 236 positioned around theupper end of the aperture 226. yA helical spring 240, compressed betweenthe plug- 224 and the venting valve disc 236, biases thefdisc towardengagement with the valve seat 238.v

A passage 242 (Fig. 5) extends radially from the lower venting valvechamber 228 and con- .6 or teeth 3|4 and 3| 6 are positioned on each ofthe cammingrplates 282 between thefcams 3I0 and 3|2. The camming plates282 are positioned so that the pivot pin 21| of the rocker 210 islocated between the stops 3|4 andf3`|6 so that the stops respectivelyLlimit clockwise and counterclockwise rotation of the camming platesaround the hub 288. I fr The left-hand cam 3|0is positioned adjacent theleft-hand rocker arm 214, and the right-hand cam 3|2 is positionedadjacent the right-hand rocker arm 216. y The stops3|4 and 3 B arespaced `so that the cam 3|0-rotate`s the rocker arm 214 and therebylifts the venting valvestem 232 suiiiciently to unseat the valve disc-236- when the .camming plates are rotated clockwise until' the clockwiseto liftthe inlet valve stem' |86 suiiiciently to unseat the valve disc|94 when the camming plates 282 are rotated counterclockwise until theright-hand stop'3l'6 engages the pivot 216 of the rocker 210 is engagedbythe cams 3|0 nects with a diagonal drilled conduit 244 communicatingwith a radiall passage 246 extending into the upper end of a pistoncylinder 248.

The piston cylinder 2487is closed at its upper end by a threaded plug258 having a small axial orifice or Vent 252. A piston 254 having apacking ring 256 is positioned within the piston cylinder 248.

A rocker 210 (Fig. 4) is pivoted von a pin 21| mounted on a pillar 212xed to the lower side of the valve body |18. A left-hand arm 214 of therocker 210 is positioned just below the lower protruding end of theventing valver stem 232, and a right-hand arm 216 is positioned justbelow the protruding end of the inlet' valve stein |86. Consequently,clockwise rotation of the rocker 210 lifts the venting valve stem 232,and counterclockwiserotation of the rocker lifts the inlet valve stern|86.

The rocker 210 is operable by a frictional clutch assembly 280 mountedon the shaft |04 supporting the pinion 98 and the gear |08. best shownin Fig. 2, the'clutch 286 comprises a pair'of identical camming plates282 sandwiched between a pair of discs 284 and 266 which are keyed toahub 263 xed to the shaft |04. The left-hand disc 284 abuts against -aange 290 formed on the left-hand end of the hub 288. A leftward force isexerted on the right-hand disc 286 by a spring spider 292 retained onthe hub 288 by a vwasher 294 and a split spring wire ring 296 seated ina groove 298 in the right-hand end of the hub 288. f

Several discs 300, made of libre or a metal such as bronze, extendthrough a plurality of equally spaced -aligned apertures 302m thecamming plates 282. Thediscs 300 frictionally engage the inner surfacesof the discs 284 and 286. The arrangement of the `discs 388 is clearlyshown in Figs. 2 and 4. The spring spider 292 maintains the discs 284and 286 in frictional engagement with the discs 300. f

The camming plates 282 have-aligned projecting left-hand cams 3|0 andaligned projecting v right-hand cams 3|2. A pair of projecting stops or3 |2 and neither the venting valve stem 232 nor the inlet valve stem |86is lifted. I y

Aligned projecting teeth 328 arepositioned on the camming plates 282approximatelyninety degrees clockwise from a point 'onthe plates midwaybetween the rotation limiting ,-.stops' 3|4 and 3|6. I f i A ratchetpawl l322 is positioned adjacent the aligned teeth 320. The pawl 322 ispivoted on a pin 3'24 carried on the lower end of a rectangular shank326 extending from a piston rodv v,328 which is secured to the piston254. The outer end of the rectangular shank 326 is guided by anaperturedv angle `bracket 330 mounted on a channel member 332 secured tothe right-hand sideof the valve'body |18 and extending generallyparallel to the piston rod 328 and the shank 326. A helical spring 334is compressed between a spring retaining cup 336 fixed tothe rectangularshank 326 and the angle bracket 339,`upwardly mingv aperture 348 in theratchet pawl 322nor-f mallyrto retain the ratchet pawl out of engagementwith the aligned teeth 320. The camming aperture 348 has a left-handgenerally vertical edge 350 for limiting counterclockwise rotation ofthe pawl, a right-handv generally vertical vedge 352 for limitingclockwise rotation of the 'pawl,

and a lower diagonal edge 354 sloping downward- I ly to the left. Thepawl 322 normally is biased bythe helical compression spring 334 `andthe wire spring arm 340 so that the pin 346 engages the camming aperture348vat the rounded intersection of the left-hand vertical edge 358 andthe lower diagonal edge 354. .Y

A ring 360 (Figs. 1, 3 and 4), in the form'of a segment of a disc, issecured tothe outer or righthand side of the disc 22 ofthe reel 8 asviewed in f7 .'naringialtiiasadargenumhewfuequal- '.1 ly spa-ced@smallapertures 1362 'rvhe .ripg is; .po-

sitionediconcentrierwthi .the :shaft 3 3 supporting Athe` reel all). f

-f'8 Lto 110W .throughfthe borenthe icollar l2.0i). and

.1 thence. f through :the: nipple .f fitting .4.92. `into .the

1;. :uppersinlet .yalyenchamber fwn..

e Referring. to Fig. @compressed .air.-fiows..from

-l`tending `rightwardly-froma latchpston ..36.E,..is i; movableffinto--engagement with` :arr radj acentqaperture 362 in the ring 350. Thelatchpistonw .is slidably, positioned in a.. piston qcylinderr 368formed. in. afgenerallycylindrical- Acylinder body l reso.,fastenediothe latch. body .sispby .serewsfesa .and .engaging a :shoulder.384 Lond-.he ,rightahand ...end..of.the..piston. ;c,yli1;1der.'Ybodyl310. ...'Ilie..outer :.,cylindricalsuriace othe rightv'hand endof..the

` piston cylindenbody-fllis.grooyed-.to receive a i, packing ...i-ing..3B 6. providing .:an..airtight. seal. .be-

tween Ythe :piston qcylinder... body.. .and the. )latch n ...body .318.

The. bore 3.16.1!1.. the latch ,body '3.18.L andthe ...pistoncylinderbody 53.10. are. dimensionedt'o. pro' vide an annular space.or.chambe13 8. 'therebetween. '.llhe annulan-)chainber3881s. connectedpiston and the...piston cylinderSSB.

Thalatch. bodyVV 318 may bev 'iormed integrally .with the 'casting' 31."The contrlollvalve body. g 'I 18 .may besecured to the. latch. body-B18bybolts' MED.

'."The annular chamber388 between'lthe' lai-.en 5 bony. 3.18.andtnepismn -ynnderbqdy L31uL is clon-#40 Vnected withthe upper inletyalve'chamherfiliby .a'. longitudinal passage-402' extending .throughthe latch .body/318 and ai diagonal passage .4135 extending through thevalveY body 118'.'- 4 Y The hosereel. of this invention is particularly`adapted forre'eling heavy hose forcarryin'g lubricant at extremely highpressures." Such a hose Vmay. .be connected .withv the. tnipple''tting`i^4, Vshown .in Eig112, .and may be .coiledpn they reel `l il.

vThereel .may bep'dimensioned to...handle",about 25'Uv feetof.lubricant.hoseLforexample.

The outlet .'of a lubricant source capable j i .pro-

'..ducinga desiredvalue 'of lubricant pressure may .be Aconnected with.the internally threaded.. bore :The .hoses-reeli. of. this.fini/.mention.mayv be .'-pref .pared for operationgby--connecting, av.source of compressed air to theair .inlet 'fittngff2.:(Figs. ..11.',.ands 4). l-Referringrto .Figi li.,y compressed air supplied to 'thetinleti fitting i2 l! forces. the r check nto" .1'2,shown...in Figi 3."Lubricant passes'throughro diagonal4 passage' 404i in the- V.valyabqdy31.18, the

longitudinal passage 402 ntheflatchbody Y318, the. rannular i chamber-.388.- between. the vlatch body .318-and theplatch piston cylinder?body 3.10.,..and

10 the radial openingvr 390 into the portion .-of .the

-. slatch .piston cylinder 368 ontheright-hand side:of..the.-.piston1=36. y

.-.lAir'at a.Y pressurefivitlflinthe: normalv `operating .range isvefective .to forcefthe-piston. 365,1eftward- 15 ly againstthe .biasingforce oflthe .spr-ing .391i so .thatthe latch; pn.3.64. .isdisengagedfrom .the .ap- .er-tured .ring 3.61).v..WhenairLunderpressureis.notsupplied to the .hose reel or. whemthe'airepressuref is .abnormally 0 low, .the. .sp1:ing.396.moyes the.piston 366 .rightwardly so. thatthelatch pin'. 364 -.engages..one .of.the. apertures.'362.inflthe ring 3.B0.to l`atchfthe .reel I D -for.preventing unreeling 'of the. hose. .due .,togravity.

The workingparts of. thehose.reelfparticularly .-as..shown .in .liPigQare.. in .the .positions...they assume.- when the.hose.is ..par tly.unreeled from the reel lll. Furtherrunreeling. of..the.hose .ro-

. v.tates,..tlf1e. ,.reel. .together with .the fsh'aft'.' 5i) and 0 thepinion'il 32 .counterclockwise .The gear '100,-

mesh-ing withflthe pinion 102; -together with .the shaft-.104..and-thepinion '58, areltheieby .rotated clockwise. Consequently the rack. SB,meshing with the..pinion..'98; isimoyedfupwardly vsothat 35! Lthepiston.'".9l)....mov.es.` outwardlyfin-Jthe .piston -cylinder '.14towardtheldse 8B. lclosi'ng" the A.outer .endioi the .piston cylinder.

H'The outward motion of' the' pistoniil.. compressesthe. ain in-theinner. cylinder 82 .between L lar. chamber. 84 .between the. puter,A andinner cylindrical Walls'j8 Aand-1.82 isJalso compressed '..becanseairowsliromthe. interior of .the .inner cylinder; 82 v.through'thegroove.'88 inthe disc '86 into theannularchamberd.

..AirV flows outwardly frorr1-the annular .cham- .ber' 184. through. the...conduit 1.10,. extending'. horizontally fromthe .collar "H4 'whichsupports. the air cylinder I4, and through'thetransverse Apas- .sage-L1!! (Eig. 5)..intothe chamber` '1.16 inthe yalve body 1.18.. Air..passes .from .thelchamber |16 1 through the diagonal passage'. 220.intothe upper Venting.Valve"chamber222.

..-As.. explained preyiously,.the shaft 'SL04 KEig. 4) ...rotates.clockwise when.. hose is.: being ..unreeled ...fromfthereei It.vThelfiub: 288,/.which-.is-keyed .to theshaft I-llfi,l and thediscs 284and 28,6,v which are keyed to "the hub2f88, are also rotatedclockvwlse.

iThe discs .28dand 28B frictionallyexert aLclockwise :t'orque-.uponftheidiscs 3ll0'whicheare positioned inthe apertures `'3112 in'.y thezcammngplates 282, and a clockwise torque is therebyzapplied to vthe/cammingplates.

The -camming A-'pl'ates "282 function as vif they were a single member.As shownftheymay be in "the'form of'two'thin platesfin order to`facilitate `their yfabrication by. punching. 0 'The clockwise: torque''frictionally appliedxto thev camminglplates282 .rotates thefplatesuntil the left-hand stop' 3M engages. therocker-.arm lpin 211,..asbestshownf in liga .7. :.Consequently, the.. left-hand :zcamw 3 lll'- :engages the? left-hand `.fnfa'lyedisc 202. fromzitszseat'21'l4fto; permit the air ,75 rocker arm- 214 -torflift `the=Vent-va1ve stem-232 `and thereby "to disengage 'venting valve chamber228. y f l theV vent valve disc 236 from its seat 238.

Air then passes freely between the disc 236 and they seat 238, throughthe aperture 226,

around the valve stem 232, and into the lower As shown in Fig. 5,Vairpasses from the lower venting valve chamber 228 through the radialpassage 242, the diagonal drilled 'conduit`244,

and the transverse passage 246 into the portion of the piston cylinder248 above Athe piston 254.

Air is permitted to escape slowly from the pistony cylinder 248 throughthe orice'252 (Figl) the plug 250. However, suiiicientpressure developsin the pistonv cylinder 248 to force the pistonA 254 downwardly againstthe biasing force of the helical spring 334.

The piston rod 328, the rectangular shank 326 10 and then, to slackenpermit rereeling thereof. l

A force toprovide an,y initial, rereelingfitor'quie upon the reel I0 is'normally' providedgby'fair trapped under pressurein the -air cylinderI4; in

the event that the -nletivalve is, closed byay slight y .unreelingmovement. When .the ventingvalve f comprising the disc 2.3.6 '.(Fig.:i)and theseat 238 is closed by the action. o'i.-` the pawll 322 and vthespring 334, lthe vnormal means of escape for' l air in the air cylinderI4fis cutoff. andthe Apressure then existing in the air lcylinder is"ymaintained feraieng period ofitime. c ,a

Thus, air trapped in the air cylinder I4 initiates rereeling by moving.thel pistoni 90 vand the rack.

96 downwardly. Thefrack 96xrotates the :pinion v 98 counterclockwisetogether with thexshaft |04,v

. and the gear ID3. iThe gear I Illlrotates'the pinion extending fromthe piston rod, and the ratchet pawl 322 pivotally secured tothe shank,are

, moved downward along with the piston 254. As

the ratchet pawl 322 is moved downward, the pawl is rotated clockwise bythe wirespring arm 340 so that the lower slantingedgev 354 of thecamming aperture 348 in the pawl rides onthe 'pin 3,46. As best shown inFig. 7, the downward and clockwise movements of the pawl322- positionthepawl for engagement with .the aligned 'teeth 328 on the cammingplates 282.

When the desired amount of hose has been unreeled, the unreeling motionof the reel IIiis stopped. Immediate rereeling of the hose may beprevented by restraining the hose manually or by a suitable latchingmechanism which is not part of this invention and is not` illustrated.

' Wardly through the orice252, as previously described. When the airpressure decreases to a predetermined Value, the spring 334 forces thepiston 254, the piston rod 328, the rectangular shank 328, and theratchet pawl 322 upwardly.

Il2 clockwise, reel Il). l y i i The counterclockwise rotation of theshaft 104 (Fig. 4) produced by thereelingimotiongof the reel I Ilrotates the hub 288,"keyed to the shaft I04, andthe clutch discs 284and-5,288, keyed to the, hub :288, counterclockwise. .A'counterclockwisetorque is applied'to the camming plates 282 by the discs 33D which arepositioned in the apertures 3D2 in the platesand which frictionallyengagethe clutch discs '284 andv 285.1 Consequently, the camming plates282 are 'f rotated countercloclrwise until the right-hand stop .316'

engages the rocker arm pin1f21 I. Thefright-handcam 3 I 2 thereby'engages'7 -the `right-handA rocker arm .z-lgto lift the inlet4valve'ste'm |86. for: unseating the inlet valve disc |94.

When the disc- I94 is unseated, :airunder pressure from marinier-.stungzo yflows. through the The pawl: 322 engages the aligned teeth 320 onthe camming plates 282, as shown in Fig. '7, so that the upward motionof the pawl rotates the camming plates counterclockwise. Thecounterclockwise rotation of the camming plates v282 permits the ventingValve disc 236 to engage its seat 238 to prevent further passage ofairout of the air cylinder I4 and opens the inlet valve I94to admitcompressed air to the piston cylinder I4 in preparation for rereeling. u

As the pawl 322 moves upwardly, the pin 345 engages the slanting edge354 of the vcamming aperture 348 and moves the pawl counterclock- Wiseso that the pawl is disengaged from the teeth 320 on the camming plates.

As previously mentioned, immediate rereeling of the hose is preventedmanually or by a suitable latching mechanism which forms no part of thisinvention and which is not illustrated. Reeling of the hose may beinitiated` in a manner which depends upon the particular type oflatching mechanism which is employed. The usualprocedure for initiatingreeling of the hose is to quickly unreel a short additional length ofhose collar 260 around the check valve .disc 202 andY through the nipplefitting I92into `the:.upper inlet valve chamber |90, and thencethroughthe clearance hole |88 around the :inlet valvestem |86 into thelowennlet valve chamber I32', 'The air under pressure passesrfromthefilower inlet valve chamber |82 .through the diagonal passage I(Fig. 5),'the chamber. I.'I6.in the va'lve'body. |18, `the passage I'I4,theconnecting Vconduit, I'I0 (Fig. 3) and the annular chamber 84between'the outer and inner walls 89 and 82 of the airrpiston. cylinder.I4 into the interior .of' the piston cylinder I4. Thus, air at the fullinlet pressure-is transmitted to the'air cylinder I4 to `provide aconstant reeling force upon the piston 90. y

The force of the-air .under pressure upon the Y y piston 90 is ampletoprovide positive reeling 'of the hose, but may :be .overcome bymanually grasping the hose for stopping the hose'before it is fullyreeled.' Any slight unreeling motion of the hosefollowingjsu'chstoppage. is sufficient to rotate the camming plates 282clockwise in the' manner previously described to permit reseating of theinlet valve disc I94 for cutting offthe air cylinder I4 from the airinlet 28. Such a slight unreeling motion of the hose is usually requiredto operate a mechanismwhichmay be provided,r

as previously explained,v for latchin-g the reel to prevent immediaterereeling. This is the case with the latching mechanism of theFosterapplication which may be employed in connection with the hose reelof` this invention, as previously the nal stages r`oi? rewinding. As.previously described, rewinding movement of the reel I 8 moves the rack96 downwai'dlymig. 3) andthe piston the tension 'c on :thezhose lto ltogether with the shaft50 andthe plates orreturning the plates to theneutral posi-` tion. f v

In the apparatus of this invention compressed,

air is supplied from Ya source such as a compressor to the air cylinderduring reelingl movement of the reel to provide a constant reelingtorque.

This is accomplished by means of an inlet valve` which isropened in thereel.

response' tofreeling motion of Meansfi's provided by this inventiony toopen the inlet valvein response'to manual manipula..

tion of the hose. The ratchet pawl is` engaged with the clutch plates,which operate the inlet valve, when a short length of vhose is'.unreeled, and the pawl moves the plates to openV the inlet valve whentension on the `hose is slackened.

Consequently, a shot of compressed air from the f during a long shutdownof the air supply.

While I have shown and described a preferred embodiment of my invention,it will be apparent that numerous variations and modications thereof maybe made without departing from the underlying principles of theinvention. Therefore, desire by the following claims toincludev withinthe scope of the invention all such variations and modifications bywhich substantially l the results of my invention may be obtainedthrough the use of substantially the same or equivalent means. 1

I claim:

1. Reeling apparatus, comprising a reel, an air cylinder including apiston movable in a given direction to produce reeling rotation of thereel, an outlet vent, a valve for connecting the air cylinder with thevent, and means to open the valve in response to unreeling rotation ofthe reel to permit the gradual escape of air'trapped in the air cylinderand compressed by movement of the piston in a direction opposite thegiven direction.

' 2. Reeling apparatus, comprisinga reel, an air motor connected to thereel vfor producing reeling rotation of the reel, a compressed airinlet, means connecting the air motor with the inlet, a memberengageable with the reel to prevent unreeling rotation thereof,yieldable means biasing the member toward engagement with the reel,pressure responsive means for moving the member out of engagement withthe reel, and a conduit constantly connecting the pressure responsivemeans to the inlet for releasing the reel whenever the inlet pressureexceeds a predetermined value.

3. Reeling apparatus, comprising a reel, an air cylinder including apiston movable in a given direction to produce reeling rotation of thereel, an outlet vent, a valve for connecting the air cylinder with the vent, and means including a slipping coupling between the reel and thevalve to open the valve in response to unreeling rotation of the reel topermit the gradual escape of air trapped in the air cylinder andcompressed by movement of the piston in a direction oppositefthe givendirection.

4. A reel mechanism powered by compressed air, comprising a reel, an airmotor for produc- This feature prevents the* ing; reeling rotation 'oitlthe reel, Va cOmIJreSsed 1 air'inlet, an inlet valve for connectingtheinlet with the motor, means to vvopen thel inlet valve in'responsetoreeling rotation of the reelto supplycompressed airto'the motor, anoutletvent,`

an outlet valveconn'ecting the Vmotor with the outletv vent, and means.toropenithe' outlet valve in response to unreeli'ng rotation of Athereel gradually,l to relieve @back `pressure produced -in `,the Vmotorloyunreelingfrotation of the reel.

5.,A` reeling apparatus, comprising a reel, an-

air motor for Aproducing reeling -rotation of the reel, a compressedyair inlet, an inletyalve for connecting thefinlet with the; motor, apiston cylinder having-a piston, a Vent connected with the pistoncylinder, an outlet valve for connecting the air motor with the pistonvcylinder,a

cammingmemberrockable in one direction `rfor openingthe inlet :valve andinthe opposite direc-v tion foropening the outlet valve, means-forming aslipping coupling between the reelY and the camming member for movingthecamming member .to open they inletvv and outlet. valves respec-l tivelyin response vto reelingand unreelingirota` tion ofthe reel, a pawlmovable to an extended position for engaging the camming member, meansconnecting. the'pawl with the piston for moving the'pawl .to theextended position in response to'backpressure of Aair admitted tothepiston. cylinder from-the air motor bythe outlet valve duringxunreeling,anda spring'biasing the pawl toward a retracted position forretfractingv theipawlf after .unreeling whenv the'. back l'pressureis'suiciently ldissipatedandfor moving the camming member to close the-outletgvalve and openuthe inlet; valve, tov energize the ,motor inpreparation forvreeling. f f 1 6. Reeling apparatus, comprising a reel,anv air motorv for producing'reeling rotation of the reel,

a compressed air inlet, means for connecting the air motor with theinlet, means forming a plura1- ity of circularly disposed latchabutments on the reel, a latch member engageable with the abutmentspositively to prevent unreeling rotation thereof, pressure responsivemeans connected with the inlet normally moving the latch member out ofengagement with the abutments, and a spring for moving the latch memberinto engagement with the abutments whenever the inlet pressure dropsbelow apredetermined value insuflicient to operate thev air motor.

' 7. A reel mechanism powered by Acompressed air, comprising a reel, anair motor for producing reeling rotation of the reel, a compressed airinlet, an inlet valve for connecting the inlet with the motor toenergize the motor with compressed air, an outlet vent, a valve forconnect-` ing the'motor with the outlet vent gradually to relievepressure in the motor, valve operating means movable in a iirstdirection to open the inlet valve and movable in a second oppositedirection to open the outlet valve, and a frictional slipping couplingbetween the reel and the valver operating means to move the latter toiopen the inlet valve in response to reeling movement of the reel and theoutlet valve in response to unreeling movement of the reel, gradually torelieve back pressure produced in the motor by unreelingthewpiswnfeynnen an? outlerrivrve enormanri biasedv emsedefornne'etmgfrne-air mstoiswinither-pistn. y1 dereane tnefwenefzazeammmgetioniforrretraetingthe pamzrlaftermnreelingrvhenemoving'lithefpammingvmember' o?elosefsthecutlet'gO-f;

valve andi open the' init-,twainempreparatiomforn nectewithfthe :inletforerestraimngxzunreeiine: movement of-thellreellwhenever @the@pressureL` lthe inIet-"drcpsizbelowfa 'predetermined evale inen25sudientto operaterhefair motor# f 9. A lreel mechamsnrnpoweredifcompressedet airfcompr-isinga -reelf'an ain mpi-,ois:fois1pro'cliffs- ;ring VKreeling k.rotationof .the'reelvaf compressedfsainf:

connecting L:the finleti with .the motor; imeanswtoopenlthe'finletvalviinnrespenseftofreeiirxgzsrdta f tionztofthe:reeI-'to'iasuppiwcompresseditaiiitorth motor;yinea-ns.icon'n'ectedstoftheenIettnfrestraiznes ing iunreelingrotatidnfoin-theme11? whenewernthee 5 'p inlet'pressure drops'beloxmfaprdetermhedLi/ailuee insufficient to operate the motor/',ranoutlzyentrzian? Aoutlet'txrlalve noz'fr-n'aliys` biasedscl'oseci'ifonione'ctingithemotor'Withtheoutietiventgranwineansri;

to openflthe'ioutlet valve' infresponse to urireeling Y' rotation of thereel gradually to relieve back pres-lt."

10.?fA reels mechanisnrfpoweredfby acompressed 1 1` air,fcomprising areel; 'an'.air: motor Iconnected to`vr th'ereell fori rotating the@reelzinfa reeling:direcLv valve' connectedfbetween' the inlet andthe-motor',

and a slippable torquetransmitting devc'emcon-w nected -betweenthe reeland' fthervaivetow'open ther :valve in i response vftcr-rotation i ofythe f-reel inV ther-reelingy direction fto supply'r compressed arnto 11;? A vreel1mechanisrrrpowererifloyf compressed-f' f airlfcomprisng-areelfan air motor; connected-etc themreel'- `for s producing' svreeling@rotationl of the latter; a compressed;arinlet'fan in1etiva1ve-no-rmallyf 1 biased -r-closedf f and connectedbetween 'the inlet; andthe motor; a rictionel'1 `couplingdeviceconnectedbetweenfthe reeland.thefvalve to @pen the dat-ter in yresponseffto reeling rotation- `ofthe reel to supply compressed air to the motor; fa-re' straining devicereieasab1e=by airv pressure and connected Ito the -inletfor restrainingunreeiing rotation ofthe reel-, and a conduitconstantly con.v

neetingilthe.restrainingdeViceto lthe n1et-for restraining thevr reelwhenever -thefinlet fpressure drops below a predetermined4Valueinsufficient to operate the motor...y

n Fenner-rex ezscnv nEFERencEscnni-.l

file iofnthisu patenti:

` UNITED"srnrnsfmrnnrs Number Namey Datel.

1,15I;s90 Mconneu. Aue; 31;. '11915. 2,499,909' Fox Mr.7, 1950

